Security Hardening

FreeBSD 12 — py-pycrypto — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py-pycrypto — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pycrypto — vulnerable ElGamal key generation Related CVEs: CVE-2012-2417 Upstream summary: Dwayne C. Litzenberger of PyCrypto reports: In the ElGamal schemes (for both encryption and signatures), g is supposed to […]

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FreeBSD 12 — linux-f10-openssl — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux-f10-openssl — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: OpenSSL — multiple vulnerabilities Related CVEs: CVE-2009-1377 CVE-2009-1378 CVE-2011-3207 CVE-2011-3210 Upstream summary: OpenSSL Team reports: Two security flaws have been fixed in OpenSSL 1.0.0e Under certain circumstances OpenSSL's internal certificate […]

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FreeBSD 12 — rubygem-activejob — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rubygem-activejob — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Rails — Active Job vulnerability Related CVEs: CVE-2018-16476 Upstream summary: Ruby on Rails blog: Rails 4.2.11, 5.0.7.1, 5.1.6.1 and 5.2.1.1 have been released! These contain the following important security fixes, […]

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Debian 9 — e2fsprogs — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — e2fsprogs — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-5094 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Debian 9 — ffmpeg — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — ffmpeg — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-9608 CVE-2017-14054 CVE-2017-15186 CVE-2017-17081 CVE-2018-6392 CVE-2018-14395 CVE-2018-15822 CVE-2019-12730 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix […]

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Arch Linux — libvirt — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libvirt — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202101-42 Related CVEs: CVE-2020-25637 CVE-2020-14339 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1:6.5.0-3. Fixed in: 1:7.0.0-1. Group: AVG-1240. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Common Problems 118616

Ubuntu 16.04 LTS locale warnings: Perl locale not supported

🟡 Medium   ⏱ 5–30 min  Last verified: 17 March 2020 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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Common Problems 115559

RHEL 7 rsyslog not forwarding logs to remote collector

🟡 Medium   ⏱ 5–30 min  Last verified: 17 March 2020 Affected versions: RHEL 7 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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How to Install GitHub Actions Runner on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Install GitHub Actions Runner on SLES 12

Introduction This tutorial covers How to Install GitHub Actions Runner on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper […]

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Common Problems 115070

UTF-8 locale not configured correctly

🟡 Medium   ⏱ 5–30 min  Last verified: 17 March 2020 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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